NEET2020Chemistryp Block Elements (Group 13 & 14)Actual
Identify the correct statements from the following: (a) CO 2 g is used as a refrigerant for ice cream and frozen food. (b) The structure of C 60 contains twelve six-membered carbon rings and twenty-five membered carbon rings. (c) ZSM − 5 , a type of zeolite, is used to convert alcohols into gasoline. (d) CO is a colourless and odourless gas.
Options
- A(a) and (c) only
- B(b) and (c) only
- C(c) and (d) only
- D(a), (b) and (c) only
Correct answer
C. (c) and (d) only
Step-by-step solution
(1) ( CO ₂ ) (s) (dry ice) [not ( . CO ₂( ~g ) ] ) is used as refrigerant for ice cream and frozen food. (2) The structure of ( C ₆₀ ) contains 20 six carbon rings and 12 five carbon rings. (3) ZSM-5 (a type of zeolite) is used to convert alcohols directly into gasoline. (4) ( CO ( g ) ) is colourless and adourless gas